Method of disinfecting.



. NITED. STATES.

ATEN'I ROBERT IIARRIS REEVES, OF LONDON, ENGLAND.

METHOD OF DISINFECTING.

' SPECIFICATION formingpart of Letters Patent No. 631,228,da ted August 15, 1899.

Application filed December 29, 1897.

[0 all whom it may concern.-

Be it'known that LROBERT HARRIS REEVES, a subject of the Queen of Great Britain, residing at Cedardale, Put-hey Bridge road, Putney, London, England, have invented certain new and useful Improvements in Methods or Processes for suppressing Noxious Vapors, (for which I have obtained Letters Patent in Great Britain, dated September 28, 1895, No. 18,185,) of which the followingis a specification.

- This invention has for its'object to provide 'new and improved means for purifying the air ofdrains and sewers or for suppressing noxious vapors generally. This object I accomplish in the manner hereinafterdcscribed and specified in the claims.

In order to enable those skilled in the art to practice my invention, I will now describe the same in detail.

I mix sulphuric acidwith mauganate of soda and carbon or wood dust, all in a dry condition, for the purpose of generating a larger Volume of gas when' the dry mixture is used, as hereinafter set forth.

For the purpose of my invention the generatingof gases (oxygen and sulphurous'acid) consists in mixing manganate of soda and carbon or fine wood dust in a dry powdered state with sulphuric acid, whereby the 1 dust or its equivalent, wood dust, added in a cakes on' the top, thereby preventing the proper action. This also produces intense heat, and in nearly all cases the sulphuric acid pnly affects the top portion of the manganate of soda and is so long in noting that Serial No. 664,456, (No specimens.)

be of practical use.

is placed in sewers, drains, spaces, or openings leading to them. The dry mixture may be placed on a fiat disk or plate orin a. vessel lowered into the drain, sewer, or space. The sulphuric acid is then allowed to drop on the prepared man ganate of soda and carbon or wood dust, when. by the'action of' one chemical on the other large volumes of gases are generated which purify all foul air. After these gases are evolved, as above described, water is mixed with the residue mixture, by which it is formed into a strong solution of pcrmanganic acid. This treats the sewage .or other matter flowing through drains or cul.- vcrts. The mixing of these chemicals for producing gases and permanganic acid may be accomplished by hand or through the me dium of any suitable means.

Having thus described myinvention, what I claim is' 1. The method or process herein described of suppressing noxious vapors, which consists in adding carbon dusttomanganate of soda in a dry condition, and mixingsulphuric acid with the saidmanganate preparation, to evolve gases which act upon the noxio'usvapors, substantially asset forth.

2. The method or process herein described of suppressing noxious vapors and purifying sewage, which consists in mixing sulphuric acid with a dry mixture of manganate of soda and carbon dust, and after the gases are evolved,addi'ng water to the residue mixture to form permanganic acid whichacts on the sewage, substantially as set forth.

3. A mixture for the purpose described, consisting'of an intimate admixture of manganate of soda and carbon dustin a dry statedesigned for use in connection with sulphuric acid, the carbon dust being in sufficient quantity to prevent solidifying when the acid is brought into contact with the mixture as and for the purpose specified. p

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

ROBERT HARRIS REEVES.-

\Vitnesses:

EDMUND STANHOPE SNEWIN, WILLIAM OSWALD BROWN. 

